http://www.merriam-webster.com/dictionary/ambassador http://www.merriam-webster.com/dictionary/ambassador > 2 a : an authorized representative or messenger >

http://www.merriam-webster.com/dictionary/ambassador http://www.merriam-webster.com/dictionary/ambassador > 2 a : an authorized representative or messenger > b : an unofficial representative <traveling abroad as ambassadors of goodwill>